The catch
EcoFlow RIVER 2 Pro
Even though it holds 50% more battery energy, the 220W solar input is the same ceiling as on the RIVER 2 Max.
Side by side
A lighter small-appliance kit points to the RIVER 2 Pro. For higher-power equipment, or a compatible expansion battery down the road, the C1000 fits.
Before you buy
On a steady 300W load, the model has EcoFlow RIVER 2 Pro lasting about 2 hours and Anker SOLIX C1000 2.8 hours.
Where this comes from
The formula is hours = nominal Wh × 0.8 / 300W, using 768Wh and 1056Wh. The 80% factor is a shared planning allowance for unusable energy and conversion losses. It is not a measured efficiency. Idle draw, temperature and the real load change the runtime.
The catch
Even though it holds 50% more battery energy, the 220W solar input is the same ceiling as on the RIVER 2 Max.
The catch
Compared with the C1000 Gen 2 it weighs more and has a lower continuous AC rating. The two generations also don’t share the same expansion path.


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The RIVER 2 Pro is the choice for a lighter small-appliance kit. The C1000 suits higher-power equipment and a compatible expansion battery in the future.
The bigger inverter is the upgrade that counts
Which one fits
RIVER 2 Pro comes in at 18.2 lb versus 28.44 lb, saving 10.24 lb. That favors longer carries, provided its 800W output and 768Wh capacity are enough.
RIVER 2 Pro is rated at 800W continuous and C1000 at 1,800W. To run a 1,000W load you need the C1000 rating, and you still have to check startup and outlet limits.
The common planning assumptions put EcoFlow RIVER 2 Pro at 2 hours and Anker SOLIX C1000 at 2.8. Measure the real wattage before choosing an overnight reserve you require.
EcoFlow RIVER 2 Pro takes up to 220W of input and Anker SOLIX C1000 up to 600W. Compare your actual panel strings with the voltage and current limits as well as this total.
In practice
On a steady 300W load, the model has EcoFlow RIVER 2 Pro lasting about 2 hours and Anker SOLIX C1000 2.8 hours.
The formula is hours = nominal Wh × 0.8 / 300W, using 768Wh and 1056Wh. The 80% factor is a shared planning allowance for unusable energy and conversion losses. It is not a measured efficiency. Idle draw, temperature and the real load change the runtime.
Anker SOLIX C1000 stores 37.1 nominal watt-hours per pound, against about 42.2 for EcoFlow RIVER 2 Pro.
Nominal energy is divided by published weight, 768 / 18.2 and 1056 / 28.44. The comparison covers stored energy per lifted weight. It leaves out measured efficiency and handle comfort.
Compared with RIVER 2 Pro, C1000 has 37.5% more nominal energy and 125% higher continuous output.
1800 / 800 - 1 = 1.25. 1056 / 768 - 1 = 0.375.

EcoFlow, EFR620
This 768Wh camping station has 800W continuous AC output and a handy 100W USB-C port. You get extra battery reserve without the weight of a full 1kWh unit.

Anker SOLIX, A1761
The original C1000 combines 1,056Wh with an 1,800W inverter and can take a matching expansion battery. It still makes sense when adding capacity is a higher priority than saving weight.
Spec by spec
| Spec | EcoFlow RIVER 2 Pro | Anker SOLIX C1000 | In practice |
|---|---|---|---|
| Nominal battery energy | 768 Wh | 1056 Wh | The starting runtime budget comes from stored energy. |
| Continuous AC output | 800 W | 1800 W | Load screening uses this sustained rating, which is separate from surge and boost modes. |
| Lifting weight | 18.2 lb | 28.44 lb | Flat ground is where wheels help. A trunk, step or shelf still takes a lift. |
| Maximum solar input | 220 W | 600 W | Panel voltage, current and per-port limits have to fit as well. |
| Dedicated battery expansion | Fixed base capacity | Supported with compatible equipment | Integrated battery expansion is not the same as charging from an external source. |
| Published transfer limit | 30 ms | 20 ms | Check the exact device being connected. Even a short transfer specification can’t guarantee that every load runs without interruption. |
Trade-offs
Decision guide
Pick the RIVER 2 Pro for a lighter small-appliance kit. Pick the C1000 for higher-power equipment and a future compatible expansion battery.
Continuous output goes from 800W to 1,800W with the C1000. That can open the door to a different appliance, whereas the 288Wh capacity gain mostly just extends runtime.
The C1000 is 10.24 pounds heavier. That is easier to accept for a station that stays in the car than for a kit carried to a remote pitch.
The C1000 lists 600W of solar input against 220W and has its own compatible expansion path. Capacity on the RIVER 2 Pro is fixed.
By the numbers
What we found across the portable power stations we compare, plus the checked facts behind each finding.
Only 6 of the 50 models checked meet every need here: “I need power at campsites and on weekends away”, “I want backup power for the essentials at home”, and “Solar will be a real part of how I recharge”.
6 models fit, out of 50 checkedAnker SOLIX C1000 lists 1,800 W for continuous AC output rating, 125% more than the 800 W on EcoFlow RIVER 2 Pro.
How we countedThe count uses each product's current fit ratings for “I need power at campsites and on weekends away”, “I want backup power for the essentials at home”, and “Solar will be a real part of how I recharge”. A need with no documented match is not counted.
How we calculatedFigures are the continuous output rating. Surge numbers and boost modes that lower voltage do not count. For context, 47 of 50 models publish comparable figures.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| EcoFlow RIVER 2 Pro |
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| Anker SOLIX C1000 |
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Ready to buy
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